Home / 256,976-558,057

Finding the Third Proportional to 256,976 and 558,057

Calculator

Solution

The third proportional to 256,976 and 558,057 is: 1,211,893.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,976 : 558,057 = 558,057 : x
  2. Step 2: Convert to fraction form
    256,976/558,057 = 558,057/x
  3. Step 3: Cross multiply
    256,976x = 558,057 × 558,057
  4. Step 4: Simplify right side
    256,976x = 311,427,615,249
  5. Step 5: Solve for x
    x = 311,427,615,249/256,976
  6. Step 6: Final answer
    x = 1,211,893.78

Related Problems

Find third proportional to 128,488 and 279,028.50
Half scale
Find third proportional to 513,952 and 1,116,114
Double scale
Find third proportional to 256,978 and 558,061
Similar ratio
Find third proportional to 385,464 and 837,085.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.